1/* 2 * Copyright 2017, Data61 3 * Commonwealth Scientific and Industrial Research Organisation (CSIRO) 4 * ABN 41 687 119 230. 5 * 6 * This software may be distributed and modified according to the terms of 7 * the BSD 2-Clause license. Note that NO WARRANTY is provided. 8 * See "LICENSE_BSD2.txt" for details. 9 * 10 * @TAG(DATA61_BSD) 11 */ 12 13#pragma once 14 15#include <stdint.h> 16#include <utils/time.h> 17 18#define KHZ (1000) 19#define MHZ (1000 * KHZ) 20#define GHZ (1000 * MHZ) 21 22typedef uint64_t freq_t; 23 24static inline uint64_t freq_cycles_and_hz_to_ns(uint64_t ncycles, freq_t hz) 25{ 26 if (hz % GHZ == 0) { 27 return ncycles / (hz / GHZ); 28 } else if (hz % MHZ == 0) { 29 return ncycles * MS_IN_S / (hz / MHZ); 30 } else if (hz % KHZ == 0) { 31 return ncycles * US_IN_S / (hz / KHZ); 32 } 33 34 return (ncycles * NS_IN_S) / hz; 35} 36 37static inline freq_t freq_cycles_and_ns_to_hz(uint64_t ncycles, uint64_t ns) 38{ 39 return (ncycles * NS_IN_S) / ns; 40} 41 42static inline uint64_t freq_ns_and_hz_to_cycles(uint64_t ns, freq_t hz) 43{ 44 return (ns * hz) / NS_IN_S; 45} 46